Improvement in manufacture of hinge-hooks



@einen tetra @anni @frn CHARLES KAULBECK, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO HIM- SELF AND WATSON W. ROBERTS, OF SAME PLACE.

Zetters Patent No. 73,533, dated January 21, 1868.

IMPROVEMENT IN MANUFACTURB 0F HINGE-BOOKS.

TOALL PERSONS T0 lWHOM THESE PRESENTS MAY COME:

Be it known that I, CHARLES KAULBECK, of Boston, in the county of Suffolk, and State of Massachusetts, have invented a new and useful Improvemenrt in the Manufacture ol' the Hooks of Blind or Shutter-Hinges;

'and I do hereby declare the same to be fully described in the following specification, and represented in the accompanying draw-ings, of which- Figure 1 denotes a hook of the kind to which my invention applies. A

Figure 2 is a. diagram, illustrative -of the arrangement of the hook-blanks as they are stamped from a strip of sheet metal. I l I Figure 3 isa side view of one ofthe blanks used in the manufacture of alhook in accordance with my invention.

The common method of making a blind-hinge hook, which consists of a cylindrical spindle, a furcated shank, b, and a brace, c, arrangedand connected in manner as shown in fig. 1, the brace having a screwhole, d, made through its lower part, is Well l'known to smiths or workers in iron', and involves the welding of the parts together. By my process, I save the welding, and much of the labor usually required, and make an article much stronger and better. I

In carrying outmy invention, I stamp, by means of dies, and from a strip of plate metal of' suitable width, 'a'. series of forks or furcated blanks, each having the form shown in iig. 3. In stamping them from the strip, I cause the shank of one to be formed, in part or in whole, of the metal removed, to make the opening between the prongs of the next blank, the arrangement ofblanks to eect such being as shown at A B C D in lig. 2. In this way, I form into blanks the whole strip, with the exception of the shaded parts, marked e. p After each blank has been so made, I heat to redness its shank, h, (see iig. 3,) and hammer it out, and point it, after which I so heat the prongs f andy, turn up the prong into a rightI angle with the shank, and hammer out or otherwise reduce the said prong te =a cylindrical form. Next, I shape the .prong g to the form of' the brace c, and

finally bend it, with respect to the shank, in manner as shown in 6g. I. Thus, I save all welding of separate pieces of wire, as in the common mode ol"v making the hinge-hooks, and I am enabled to produce tbehooks with far less labor and expense, and, besides, make stronger and better ones than those constructed of separate pieces welded together.

I claim the mode, substantially as above described, of manufacturing shutter or blind-hinge hooks.

'CHARLES KALBECK.

Witnesses:

R. H. EDDY, SAMUEL N. PIPER. 

